Here's nobel prize-winning economist Paul Krugman proposing that the global economy can be revived via faking an alien invasion. It's proof that the system of economic thought known as Keynesianism has gone far beyond John Maynard Keynes' original proposal to maintain surpluses in times of prosperity in order to boost aggregate demand during recessions, and has simply become another form of Faustianism, our underlying yearning for expansion into infinity.
It's also proof that there is no hope. Our civilisation's delusions run too deep to be challenged and/or reformed. History's maw awaits us as we dream ever-wilder dreams of salvation.